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Intel Celeron D Processor

Intel Celeron D Processor

The Celeron processor is a budget processor offering moderate performance at an affordable price. This processor is suitable for use in notebook and desktop computers running home-office applications and providing access to the Internet. It is not be recommended for use in a high performance game machine or a heavily accessed web server.

The Celeron D processor, released in December 2005, is based on the Prescott core. It runs at clock speeds up to 3.33 GHz, has a 533MHz Front Side Bus Speed, a 16kb L1 cache, and an integrated 256K L2 cache. Celeron D models 347 and higher use the 65nm Cedar Mill core and have a 12KB + 16KB (Data + Instructions) L1 Cache and a 512KB L2 cache.

Pins on processor Contact pads on processor
Pins on bottom of processor - Contact pads on bottom of processor

This processor uses either the socket 478 or the LGA775 Socket. The two socket types are not interchangeable because the newer 775-pin Land Grid Array has no pins on the processor. Gold contact pads provide the connection between the processor and the socket on the motherboard.

Some Celeron D models feature Intel's Extended Memory 64 Technology which allows them to access larger amounts of memory and support 64-bit extended operating systems. Some models, including those with J in their model number, feature the Execute Disable Bit (XDB), which prevents viruses from exploiting buffer overrun vulnerabilities.

Celeron D Processors

Model ProcessL2 CacheClock Speed EM64T XDB
310 90 nm 256 KB 2.13 GHz    
315 90 nm 256 KB 2.26 GHz    
320 90 nm 256 KB 2.40 GHz    
325 90 nm 256 KB 2.53 GHz    
325J 90 nm 256 KB 2.53 GHz   X
326 90 nm 256 KB 2.53 GHz X X
330 90 nm 256 KB 2.66 GHz    
330J 90 nm 256 KB 2.66 GHz   X
331 90 nm 256 KB 2.66 GHz X X
335 90 nm 256 KB 2.80 GHz    
335J 90 nm 256 KB 2.80 GHz   X
336 90 nm 256 KB 2.80 GHz X X
340 90 nm 256 KB 2.93 GHz    
340J 90 nm 256 KB 2.93 GHz   X
341 90 nm 256 KB 2.93 GHz X X
345 90 nm 256 KB 3.06 GHz    
345J 90 nm 256 KB 3.06 GHz   X
346 90 nm 256 KB 3.06 GHz X X
347 65 nm 512 KB 3.06 GHz X X
350 90 nm 256 KB 3.20 GHz    
351 90 nm 256 KB 3.20 GHz X X
352 65 nm 512 KB 3.20 GHz X X
355 90 nm 256 KB 3.33 GHz X X
356 65 nm 512 KB 3.33 GHz X X

Don't confuse the Celeron D with processors without the "D", which are based on the Northwood core and have only 8kb of L1 cache and a 128 KB L2 cache.

Note that, unlike the Pentium D, the Celeron D is not a dual core processor.

More Computer Anatomy Articles:
• The Computer's Chipset
• Interrupt Request Lines (IRQs)
• Binary Floating-Point Numbers
• The Motherboard Chipset
• Program Flow Charting
• Basic Arithmetic Logic Unit (ALU) Circuitry
• Microprocessor Counter, Clock, Timer Circuits
• Digital Logic Levels and Transfer Characteristics
• Introduction to the Raspberry Pi
• CPU Chip Packaging

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